n: 40 m: 592 packed: 13 density: 0 nodes: 0 solveTime: 25490 buildTime: 230 solved: true
{0,3,15}
{1,13,31}
{2,5,23}
{4,33,37}
{6,10,18}
{7,30,39}
{8,19,29}
{11,12,35}
{14,27,32}
{16,20,24}
{17,25,28}
{21,22,26}
{34,36,38}